Extensible window-screen.



E. T. BISHOP. EXTENSIBLE WINDOW SCREEN. APPLICATION FILED JULY 23, 1914.

Patented M2112, 1915.

WITNESSES .IIWE/VTOR 19 81077000 fills/70 A FOR/V578 written srn rns i i r;

immonn T. BISHOP, or nnw resin, n. s;-

menses nominati n filed un ee sie' To all whom it may concern a citizen of the United States, ancla resident otthe city of New York, Woodhaven, borough of Queens, in'the county rat-Queens and State of New York, have invented a 11e\i'. ancl Improved Extensible "\Vindow- Screen; of which the following is a full, clear, and exact description.

This invention relates to window screens and more especially t o screens oi the extensible type so as to be adjustabie ior win- (lows of different widths.

The invention has for its general objects to improve and simplii the construction of extensiblewindow-screens 'so to be more attractive in appearance easy to adjust and so designed as to'he devoid of naps: through which liies,.1nos-:plito s or other insects not enter. as the n; tin i is of one p 1*. with one end rigidly fastened to one section of the screen and the other-end being t ened on a roller mounted in the other section of the screcin whereby the-netting is wound r unj wound as the screen 1S contracted or;.e:i-'

tended;

Another object of the invention is the provision of a twosection screen in which springs operate on the sections to force them aparh but which tendency is resisted by the operating means for the netting roll, such operating means including a worm wheel on the. roll and a crank shat't having a worgn meshing with the worm 'wheel,wherebythe roll can he turned only by the operation of the crank. In turning the crank in one chrection the netting is-wound on the roll and the screen contracted or made narrower by the winding-of the netting on the roll,

whereas the reverse turning of the cranlt will unwind the netting and allow the springs to force the sections of the screen apart and take up the slack in the. netting and maintain it taut, the netting being the means for liniitiin the de 'rec of 'eX- ansion of the screen tranie.

With such objects in view gmd others which will. appear as the description proceeds, the invention comprises various novel features of constructionand arrngenient parts which will be set forth with particularity in the following description and claims appended hereto.

in the accompanyingdrawing which illustrates one embodiment of the invention and wherein similar characters of reference f i i v Specification 0} Letters Patent;

screen taken parallel with the netting; "i

on the lines 3 8, and r l 3 2111K. lb llOllbECL in; device.

ranged at one corner of the s c ing will rotate the worm wheel l sections of xhe screen will be drawn to -c Irieris, Figure '1 is a perspective view of the screen; Fig. 2 'is a sectional view of the 3, hand 5 are sectional viewsrespec I 5, liig. L ano light) is a detail sectionai riew on .5 are d scale of the roll-operating means.

'ielerring to the drawing, A designthe wire netting of the screen and B anti C the tno sections of-the screen frame. The

ions of the frame are preterably.

tuiniliir t'orni andthe horizontal 1neini; -s oi? the section B telescope g inthe nienihers or the section (hand these members 1 and 2 are rigif ly connected with the vertical bars a o't respective The parts "2 and e with slots for receiving; nettinjg .ri, and-these edges are soldered or otherwise rigidly secured to the section T he 'in'enihers 1. end thes'eotien B also cir inner surfaces slots S'ar are provided edges of the 1 5 of the netting are disposed inv-the tl e nieiuhers 1, while the end of the n enters the slot 6 i the member 3 a winds on a roller tl xtends longitudinally {L hin the member or bar The screen i expanded and contracted by the co-action oi? spring means and a wind.-

The spring nieans con of a pair of springs S which are arranged within the upper and lower inenihers i of the section (h and these springs bea r-c'ainst the inner ends at-the members 1 of tion B, and these sprin' A o" cal expansion tr e they tend to screen sections apart. The; comprises a crank 9 or equivalent 1) e tion this cranl: is fastened to a horizon 1O suitably. mounted in the secti. on this. shaft is a worm 11 the i L to the roll T; By turning the crank 1 iirectuin the roll 7 1s rotated to Wind up r1 netting A. and as a consequence ti in on )osition to the tension of l I Y.

but w men the cr ite dire tion the posed within the sections of the screen no gaps are formed for the entrance of tiles, mosquitos or other insects.

From the foregoing description taken in connection with the accompanying drawing, the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made when desired as are within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. An extensible window screen compris ing a frame made of two slidably connected sections, a netting having one end fastened to one section, a roll in the other section and to which the opposite end of the netting is fastened to wind and unwind, spring .means operatively related to the sections to force the same apart as the roll unwinds the netting, and gearing housed and concealed within the roll-containing section for turning the roll and forming a lock for preventing the sections from spreading apart under the tension of said spring means.

menses 2. An extensible window screen comprising frame made of two sections of metal tubing formed of a vertical bar and two horizontal bars, the horizontal bars of one section telescoping within those of the other, the bars having their inner surfaces provided with longitudinal slits, a netting having its upper and lower edge and one end meshing with the worm wheel for turning the roll, means for turning the worm, and springs housed in the horizontal bars of the section to which the netting is rigidly secured to exert constantly a force tending to separate the sections. v

in testimony whereof I have signed my nmnc to this specification 1n the presence of two subscribing Witnesses.

RAYMOND T. BISHOP. Witnes" 2s:

Cnns'rm H. ConwzN, SARAH M. Boomers 

